Violent crimes in U.S. drop when pollen count is high, scientists discover
A study recently published in the Journal of Health Economics found that reports of violent crime decline by approximately 4 percent on days where the local pollen hunt is low. The team also found there is a particularly noticeable drop—4.4 percent—in violent crimes that take place in the home—a fact that surprised researchers. Previous studies have shown that situational circumstances (like an unseasonably hot day) can affect the likelihood of a crime taking place—or at the very least, being reported. The idea here is that it affects the balance between the drawbacks of committing a crime and the benefits of a crime, which combined create the net cost of criminal activity. If the drawbacks outweigh the benefits, it is less likely the crime will take place. For the study, researchers wanted to look at the net cost of criminal activity that comes with a common health shock—in this case, seasonal allergies, which affects up to one in five Americans. Allergies can cause nasal congestion, watery eyes, an irritated throat and sneezing. They can also affect cognitive ability, mood and sleep activity. "We started this research with the personal experience that allergies made us feel less physically active and slugging on high pollen days," co-author Shooshan Danagoulian, an assistant professor in the department of economics at Wayne State University, told Newsweek. "Past research has shown that high pollen reduces children's performance on math and English tests, so we expected to see some effect on other activities as well. Though our findings confirmed our suspicions, we did not expect the magnitude of the effect on crime—the 4 percent decline in violent crime is very substantial." Danagoulian added, “Our research gives law enforcement and local governments a better understanding of the nature of interpersonal violence, especially violence at home. Domestic violence is a particularly difficult problem for law enforcement to solve since they cannot patrol inside people's homes, and our research sheds light on the role of health in the moment on such violence."